Efficient Multi-Path Routing Flow Provisioning Telemetry in Protocol Independent Multicast

2. The switch of claim 1, wherein the instructions further cause the one or more processors to compose the downstream certifying message, the downstream certifying message further comprising an identifier of the switch and an identifier of a certified ingress interface of the switch.

3. The switch of claim 2, wherein the instructions further cause the one or more processors to set a flow-certifying flag of the certified ingress interface of the switch to a positive value.

4. The switch of claim 1, wherein the instructions further cause the one or more processors to receive the downstream certifying message over an ingress interface of the switch.

5. The switch of claim 4, wherein the instructions further cause the one or more processors to set a flow-certifying flag of the ingress interface of the switch to a positive value.

6. The switch of claim 1, wherein the instructions further cause the one or more processors to publish the certified path information for a controller host outside the PIM domain according to a telemetry framework.

9. The method of claim 8, further comprising composing, by the switch, the downstream certifying message, the downstream certifying message further comprising an identifier of the switch and an identifier of a certified ingress interface of the switch.

10. The method of claim 9, further comprising setting, by the switch, a flow-certifying flag of the certified ingress interface of the switch to a positive value.

11. The method of claim 8, further comprising receiving, by the switch, the downstream certifying message over an ingress interface of the switch.

12. The method of claim 11, further comprising setting, by the switch, a flow-certifying flag of the ingress interface of the switch to a positive value.

13. The method of claim 8, further comprising publishing, by the switch, the certified path information for a controller host outside the PIM domain according to a telemetry framework.

14. The switch of claim 7, wherein the instructions further cause the one or more processors to publish the certified path information for a controller host outside the PIM domain according to a telemetry framework.

15. The switch of claim 7, wherein the instructions further cause the one or more processors to compose the downstream certifying message, the downstream certifying message further comprising an identifier of the switch and an identifier of a certified ingress interface of the switch.

16. The switch of claim 15, wherein the instructions further cause the one or more processors to set a flow-certifying flag of the certified ingress interface of the switch to a positive value.

17. The switch of claim 7, wherein the instructions further cause the one or more processors to receive the downstream certifying message over an ingress interface of the switch.